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Vishay General Semiconductor - Diodes Division T6N20AHM3/I
- Part No.:
- T6N20AHM3/I
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- 2-VDFN
- Datasheet:
-
T6N20AHM3/I.pdf
- Description:
- LOW-PROFILE VERSION 600 W UNI-DI
- Quantity:
- Payment:
- Shipping:
Inventory:14,000
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Product details
Overview
T6N20AHM3/I from Vishay General Semiconductor is a unidirectional surface-mount PAR® Transient Voltage Suppressor in DFN3820A package, rated for 600 W peak pulse power (10/1000 μs), 20 V nominal breakdown voltage (VBR = 19.0–21.0 V), and 17.1 V stand-off voltage (VWM), designed for automotive-grade ESD and surge protection of sensor signal lines and MOSFET gate drivers.
For engineers reviewing the T6N20AHM3/I datasheet, T6N20AHM3/I pinout, T6N20AHM3/I application, or T6N20AHM3/I equivalent, this AEC-Q101 qualified TVS offers verified 185 °C junction temperature capability, side-wettable flanks for AOI, and precise clamping at 27.7 V under 21.7 A peak pulse current - critical for robust automotive electronics design and high-reliability industrial control interfaces.
Technical Context
This device implements passivated anisotropic rectifier technology with junction passivation optimized for stable clamping performance across -65 °C to +185 °C operating range. Its unidirectional configuration enables asymmetric transient suppression on positive-going surges while maintaining low leakage (<1.0 μA at VWM) and tight VBR tolerance (±5%).
The DFN3820A package provides low thermal resistance (RθJM = 5–6.5 °C/W) and meets MSL Level 1 per J-STD-020 with 260 °C reflow peak. It delivers 30 kV IEC 61000-4-2 contact/air ESD immunity and is halogen-free, RoHS-compliant, and qualified to AEC-Q101 standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VBR (min/typ/max) | 19.0 / 20.0 / 21.0 V - defines reliable conduction onset under transient stress; ±5% tolerance ensures predictable turn-on across production lots |
| VWM | 17.1 V - maximum continuous reverse voltage before significant leakage; sets safe operating margin below VBR |
| PPPM (10/1000 μs) | 600 W - peak surge energy handling capacity; supports robust protection against ISO 7637-2 Pulse 1/2a/5a in automotive systems |
| VC @ IPPM | 27.7 V - clamping voltage at 21.7 A peak pulse current; limits downstream voltage stress during transients |
| TJ max | +185 °C - enables operation in under-hood automotive environments and high-power industrial enclosures without derating |
| ESD immunity | 30 kV contact/air (IEC 61000-4-2) - exceeds automotive EMC requirements for human-body-model robustness |
| Package | DFN3820A (3.8 × 2.0 × 0.88 mm) - ultra-low-profile, leadless, side-wettable flanks enable automated optical inspection and high-density PCB layout |
Pinout & Package
DFN3820A package: 2-terminal, single unidirectional TVS configuration. Anode connected to exposed thermal pad (heatsink); cathode marked by color band on top surface. Matte tin-plated terminals meet J-STD-002 solderability and JESD 22-B102 reliability standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (thermal pad) | Current return path and thermal interface | Must be soldered to large copper pour for effective heat dissipation; primary thermal path to PCB (RθJM = 5–6.5 °C/W) |
| Cathode (top-side marked terminal) | Transient current entry point | Connected to protected line; initiates avalanche conduction when V > VBR; polarity marking prevents reverse installation |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive use including temperature cycling, HTRB, and ESD stress - eliminates need for additional qualification testing |
| Side-wettable flanks | Enables 100% automated optical inspection (AOI) of solder joints without X-ray; improves manufacturing yield and field reliability |
| Junction passivation | Stabilizes VBR drift over time and temperature; maintains <0.082 %/°C tempco and <1.0 μA IR at 150 °C |
| Halogen-free & RoHS | Complies with global environmental regulations and automotive material restrictions (JESD201 Class 2 whisker resistance) |
| MSL Level 1 rating | Allows unlimited floor life and standard 260 °C reflow profile - simplifies SMT assembly without baking or special handling |
Applications
| Automotive Sensor Protection | Power MOSFET Gate Protection |
|---|---|
Use Scenario: Protecting LIN/CAN bus sensor nodes (e.g., temperature, pressure, position sensors) from load dump and inductive switching transients in engine control units. IC Role / Device Role / Timing Role: Unidirectional TVS placed between sensor signal line and ground to clamp positive surges before they reach analog front-end ICs. Use Value: Limits transient voltage to ≤27.7 V at 21.7 A, preventing latch-up or damage to 5 V/3.3 V signal chain components while maintaining <1.0 μA leakage at 17.1 V standby. |
Use Scenario: Safeguarding N-channel MOSFET gates in automotive motor drivers and DC-DC converters from gate oxide overstress due to Miller-induced spikes. IC Role / Device Role / Timing Role: TVS connected between gate and source to suppress fast-rising dv/dt events exceeding VGS(max) during high-side switching transitions. Use Value: Clamps gate-source voltage within 27.7 V during 10/1000 μs surges, preserving gate oxide integrity without adding capacitance that would slow switching speed. |
| Industrial PLC I/O Protection | Automotive Lighting Control |
Use Scenario: Shielding digital input modules in programmable logic controllers from field wiring transients induced by relay coil de-energization or lightning coupling. IC Role / Device Role / Timing Role: TVS installed at connector entry point to shunt surge energy to chassis ground before reaching optocoupler or MCU GPIO pins. Use Value: Withstands 600 W pulses and operates up to +185 °C ambient, enabling direct mounting near I/O connectors in sealed, thermally constrained enclosures. |
Use Scenario: Protecting LED driver ICs and current-sense resistors in adaptive front-lighting systems (AFS) from battery line transients during cold-crank or jump-start conditions. IC Role / Device Role / Timing Role: TVS placed across LED string supply rail to clamp negative-going transients caused by inductive kickback from driver inductors. Use Value: Maintains <1.0 μA leakage at 17.1 V while delivering 30 kV ESD immunity - critical for long-term reliability in safety-critical lighting subsystems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional TVS applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ20A | DO-214AC package (SMA), 400 W PPPM, 22.2 V VBR min, higher RθJA (~100 °C/W), no AEC-Q101 qualification | Limited to industrial/commercial use; unsuitable for under-hood automotive due to lower TJ max (150 °C) and no automotive qualification | Select SMAJ20A only for cost-sensitive non-automotive designs where board space and thermal performance are less critical. |
| SMCJ20A | DO-214AB package (SMC), 1500 W PPPM, 22.2 V VBR min, larger footprint (7.11 × 6.22 mm), AEC-Q101 available only in HM3 variant (SMCJ20AHM3) | Higher power handling but 3× larger area; requires PCB redesign; not drop-in compatible with DFN3820A layout | Choose SMCJ20AHM3 only when surge threat level exceeds 600 W and thermal mass allows larger package; otherwise T6N20AHM3/I is optimal for space-constrained automotive layouts. |
Compared with SMAJ20A and SMCJ20AHM3, the T6N20AHM3/I delivers AEC-Q101 compliance, superior thermal performance (RθJM = 5–6.5 °C/W), and ultra-compact DFN3820A packaging - making it the preferred choice for next-generation automotive ECUs where size, reliability, and qualification rigor are non-negotiable.
Availability
T6N20AHM3/I is available at Aetrix Electronics and suitable for automotive sensor protection, power MOSFET gate safeguarding, and industrial PLC I/O conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for T6N20AHM3/I includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in high-reliability diodes, rectifiers, and protection devices for automotive, industrial, and computing markets.
The T6N20AHM3/I belongs to Vishay's PAR® (Protected Avalanche Rectifier) TVS family, engineered specifically for AEC-Q101-compliant transient suppression in harsh automotive environments with emphasis on thermal stability, compact packaging, and process-controlled VBR consistency.
FAQ
What is the exact breakdown voltage range for T6N20AHM3/I?
The T6N20AHM3/I has a guaranteed breakdown voltage (VBR) range of 19.0 V (minimum) to 21.0 V (maximum) at 1.0 mA test current, with 20.0 V nominal. This ±5% tolerance is confirmed in the Vishay datasheet (Document Number: 98432, page 2) and ensures consistent avalanche initiation across all units of the T6N20AHM3/I lot.
Is T6N20AHM3/I qualified for automotive applications?
Yes, the T6N20AHM3/I is fully AEC-Q101 qualified, as indicated by the "H" in the ordering code and explicitly stated in the Vishay datasheet. It undergoes rigorous stress testing including temperature cycling, high-temperature reverse bias (HTRB), and ESD per IEC 61000-4-2 - confirming its suitability for under-hood and body-control module applications.
What does the "HM3" suffix mean in T6N20AHM3/I?
The "HM3" suffix in T6N20AHM3/I denotes three key attributes: "H" = AEC-Q101 qualification, "M" = halogen-free material composition, and "3" = RoHS-compliant, Pb-free termination with JESD201 Class 2 whisker resistance. This suffix is standardized across Vishay's automotive-grade DFN TVS portfolio.
What is the maximum clamping voltage of T6N20AHM3/I under surge conditions?
The T6N20AHM3/I clamps to a maximum of 27.7 V when subjected to its rated peak pulse current of 21.7 A (10/1000 μs waveform), as specified in the Electrical Characteristics table (page 2 of datasheet 98432). This value defines the upper voltage limit imposed on protected circuitry during transient events.
Does T6N20AHM3/I require special PCB layout considerations?
Yes - the T6N20AHM3/I's DFN3820A package features an exposed anode thermal pad that must be connected to a minimum 25 mm² copper pour for effective heat dissipation. The side-wettable flanks also require compliant stencil design and solder paste volume to ensure AOI-observable fillets; refer to Vishay's recommended mounting pad layout (page 5 of datasheet 98432).
T6N20AHM3/I Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- 2-VDFN
- Series:
- PAR®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 17.1V
- Voltage - Breakdown (Min):
- 19V
- Voltage - Clamping (Max) @ Ipp:
- 27.7V
- Current - Peak Pulse (10/1000µs):
- 21.7A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -65°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- DFN3820A
T6N20AHM3/I FAQ
1.How can I place an order for T6N20AHM3/I through Aetrix?
Please submit a Request for Quotation (RFQ) for T6N20AHM3/I on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for T6N20AHM3/I reliable?
The price and inventory of T6N20AHM3/I are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T6N20AHM3/I is usually 5 days.
3.What payment methods are accepted for T6N20AHM3/I?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T6N20AHM3/I transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T6N20AHM3/I?
T6N20AHM3/I orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T6N20AHM3/I order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for T6N20AHM3/I?
For technical support, including T6N20AHM3/I datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T6N20AHM3/I requirements.
6.How does Aetrix verify that T6N20AHM3/I is sourced from the original manufacturer or authorized distributors?
All T6N20AHM3/I products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that T6N20AHM3/I meets industry standards.
7.What is the process for return or replacement of T6N20AHM3/I?
All T6N20AHM3/I units undergo pre-shipment inspection (PSI). If there is an issue with T6N20AHM3/I, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The T6N20AHM3/I part is unused and in its original packaging.
Return procedure for T6N20AHM3/I:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T6N20AHM3/I Tags
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